So far the best solution I've found is .gsm files. zgsmplay
(zgsmplay-1.1.tar.gz at sunsite) is a nice player. The files are tiny
(about 450K for a 4.5 minute mono 8khz recording, or about 6Megs per hour)
load isn't too bad for the PC110 (.3?). The only problem is that it sounds
like a shortwave broadcast.
An old version of the real audio player might work, but they seem to be
hiding it from us mortals.
On an unrelated note, if anyone else is running redhat 5.1 on their PC110,
could they please shoot me an email?